A346471 - cp's OEIS frontend

A346471 a(n) = A344695(A276086(n)), where A344695(x) = gcd(psi(x), sigma(x)), and A276086 gives the prime product form of primorial base expansion of n.

n	a(n)
0	1
1	3
2	4
3	12
4	1
5	3
6	6
7	18
8	24
9	72
10	6
11	18
12	1
13	3
14	4
15	12
16	1
17	3
18	6
19	18
20	24
21	72
22	12
23	36
24	1
25	3
26	4
27	12
28	1
29	3
30	8
31	24
32	32
33	96
34	8
35	24
36	48
37	144
38	192
39	576
40	48
41	144
42	8
43	24
44	32
45	96
46	8
47	24
48	48
49	144
50	192
51	576
52	96
53	288
54	8
55	24
56	32
57	96
58	8
59	24
60	1
61	3
62	4
63	12
64	3
65	9
66	6
67	18
68	24
69	72
70	18
71	54
72	3
73	9
74	12
75	36
76	3
77	9
78	12
79	36
80	48
81	144
82	36
83	108
84	3
85	9
86	12
87	36

[1, 3, 4, 12, 1, 3, 6, 18, 24, 72, 6, 18, 1, 3, 4, 12, 1, 3, 6, 18, 24, 72, 12, 36, 1, 3, 4, 12, 1, 3, 8, 24, 32, 96, 8, 24, 48, 144, 192, 576, 48, 144, 8, 24, 32, 96, 8, 24, 48, 144, 192, 576, 96, 288, 8, 24, 32, 96, 8, 24, 1, 3, 4, 12, 3, 9, 6, 18, 24, 72, 18, 54, 3, 9, 12, 36, 3, 9, 12, 36, 48, 144, 36, 108, 3, 9, 12, 36]

cp's OEIS Frontend

A346471 a(n) = A344695(A276086(n)), where A344695(x) = gcd(psi(x), sigma(x)), and A276086 gives the prime product form of primorial base expansion of n.

Table of values

List of values

n	a(n)
0	1
1	3
2	4
3	12
4	1
5	3
6	6
7	18
8	24
9	72
10	6
11	18
12	1
13	3
14	4
15	12
16	1
17	3
18	6
19	18
20	24
21	72
22	12
23	36
24	1
25	3
26	4
27	12
28	1
29	3
30	8
31	24
32	32
33	96
34	8
35	24
36	48
37	144
38	192
39	576
40	48
41	144
42	8
43	24
44	32
45	96
46	8
47	24
48	48
49	144
50	192
51	576
52	96
53	288
54	8
55	24
56	32
57	96
58	8
59	24
60	1
61	3
62	4
63	12
64	3
65	9
66	6
67	18
68	24
69	72
70	18
71	54
72	3
73	9
74	12
75	36
76	3
77	9
78	12
79	36
80	48
81	144
82	36
83	108
84	3
85	9
86	12
87	36

n	a(n)
0	1
1	3
2	4
3	12
4	1
5	3
6	6
7	18
8	24
9	72
10	6
11	18
12	1
13	3
14	4
15	12
16	1
17	3
18	6
19	18
20	24
21	72
22	12
23	36
24	1
25	3
26	4
27	12
28	1
29	3
30	8
31	24
32	32
33	96
34	8
35	24
36	48
37	144
38	192
39	576
40	48
41	144
42	8
43	24
44	32
45	96
46	8
47	24
48	48
49	144
50	192
51	576
52	96
53	288
54	8
55	24
56	32
57	96
58	8
59	24
60	1
61	3
62	4
63	12
64	3
65	9
66	6
67	18
68	24
69	72
70	18
71	54
72	3
73	9
74	12
75	36
76	3
77	9
78	12
79	36
80	48
81	144
82	36
83	108
84	3
85	9
86	12
87	36

n	a(n)
0	1
1	3
2	4
3	12
4	1
5	3
6	6
7	18
8	24
9	72
10	6
11	18
12	1
13	3
14	4
15	12
16	1
17	3
18	6
19	18
20	24
21	72
22	12
23	36
24	1
25	3
26	4
27	12
28	1
29	3
30	8
31	24
32	32
33	96
34	8
35	24
36	48
37	144
38	192
39	576
40	48
41	144
42	8
43	24
44	32
45	96
46	8
47	24
48	48
49	144
50	192
51	576
52	96
53	288
54	8
55	24
56	32
57	96
58	8
59	24
60	1
61	3
62	4
63	12
64	3
65	9
66	6
67	18
68	24
69	72
70	18
71	54
72	3
73	9
74	12
75	36
76	3
77	9
78	12
79	36
80	48
81	144
82	36
83	108
84	3
85	9
86	12
87	36